Molecular Structure
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10.1 Examine the stucture of the CO2 molecule. Is this a polar molecule?
Solution:
Load and examine the structure of CO2 - co2.pdb.
Keywords: Symmetry
10.2 Examine the stucture of the benzene molecule. Is this a polar molecule?
Has benzene a low or high boiling point?
Solution:
Load and examine the structure of benzene - benzene.pdb.
Keywords: Symmetry
10.3 Both benzene and octane contains carbons and hydrogens. What will you
expect of the boiling point of a molecule as octane (chain) relatively to
a cyclic molecule as benzene.
Solution:
Load and examine the structures of octane and benzene - octane.pdb and
benzene.pdb
10.4 What's the reason for the orientation of the H2O molecules in ice.
Solution:
Examine the molecular orientation in ice - ice.pdb.
Keywords: Polarity, electronegativity, lone pair orbitals, temperature and
molecular movements.
10.5 What's d the distance between the atoms in diamond and graphite. What's
the distance between the layers in graphite
Solution:
Load and examine the structure of diamond and graphite - diamond.pdb and
graphite.pdb
By CHEMIX Dicionary - constants find distances.
10.6 What's the structure of sulfur at boiling point?
Solution:
First, load and examine the structure of sulfur - sulfur8.pdb
At boiling point the sulfur atoms will form S8 rings (single bonds). By
increasing this temperature further the sulfur atoms will be broken down
to S6, S4 and S2 fragments.
10.7 By word explain the structure of DNA. What kind of atoms are represented
and what kind of intermolecular bonds exist in DNA.
Solution:
First, load and examine the structure of a DNA fragment - dna.pdb
It seems like a double helix, and the atoms represented are listed in Statistics
text field.
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